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(No Model.)

J. H. GERRY.

WATCH TRAIN PLATE.

No. 253,999. Patented Feb. 21,1882.

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UNITED STATES PATENT OFFICE.

JAMES H. GERRY, OF NEWARK, NEW JERSEY.

WATCH TRAIN-PLATE.

SPECIFICATION forming part of Letters Patent No. 253,999, dated. February, 21, 1882.

Application filed October 28, 1880. (No model.)

To all whom it may concern Be it known that I, JAMES H. GERRY, a resident ofNewark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Watch-Frames; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompan in g drawings, and to letters of reference marked thereon, which form a part of this specification.

This invention relates to a certain improvement in watch-frames; and it consists in the combination and arrangement of parts, substantially as hereinafter more fully set forth and claimed.

Referring to the accompanying drawings, in which similar lettersof reference indicate like parts in each of the several figures, Figure 1 is a plan view; Fig. 2, a section of the same, taken through line :13; and Fig. 3, a side view of my invention, all of which tend to illustrate the manner of constructing the same.

The mode of constructing myinvention is as follows I strike up or press into shape from a piece of sheet metal, by means of suitable dies, the back train-plate, A, the outer portion or edge thereof being returned so as to constitute a flange, a, adapted to engage with the front train-plate, B, in such a manner as to form a sufficient support therefor, as well as to inclose the works thereof, as indicated in Figs. 2 and 3, the edge of the said returned portion or flange being capable, by means of its construction, of being sprung into or on its seat upon the said plate B, as will be readily un derstood. The said returned portion a has a groove running around theinterior edge, which engages with a projectingridge, 1), formed upon the front train-plate, B. The train-plate A may be cut away, as in Figs. 1. and 3, to give access to the works within.

To prevent the plate A from turning from its proper position and thereby disarranging the bearings of the several wheels therein contained, I fornithe post 0, which is fastened into the plate 13, as shown. Said post has thereon a shoulder, d, upon which the plateA rests. It also projects through said plateAand receives the bridge or cock 0 and screw f, which latter holds the several parts in combination, all of which will be clearly understood by reference to Fig. 2.

I am aware that a cap with its flange let. into a groove in the trairrplate and secured in position by screws or posts is not new; also, that a ring snapped over the edge of and thus held upon the train-plate to secure it in position without screws or similar fastenings is not new. My invention combines the advantages of both of these, in that its plate forming the top of the cap answers, as in one case, to exclude dust, &c., when the case is open, and as a support for the cock or bridge, and to uhich it maybe directly connected, and in lhatits snapfastening for securing it to the train-plate serves, as in the other case, to effectthe ready or expeditious securing in place and removal of the cap, while at the same time being deprived ofthe disadvantages ofthe same of usingscrcws or posts to secure the cap to the train-plate and of exposing the works to dust, &c., when the watch or case thereof is opened for winding or regulating it.

Having thus described my invention, what I claim, and wish to have secured by Letters Patent, is

1. The combination, with the front trainplate, B, of the back train-plate, A, post 0, having the shoulder 01 thereon and laslened to said plate B, as shown, the bridge or cock 6, and screwf, all arranged and operating substantially as and for the purpose set for! h.

2. The combination of the fIOllLtlillll-} |lltt*, B, having the undercut shoulder Z), the back train plate, A, having a returned portion or flange, a, sprung into engagementi. with the shoulder b of plate l3, post 0, having the shoulder d thereon and fastened to plate ll, as shown, the bridge or cock 0, and the screw f, all constructed substantially as and for the purpose set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 11th day of October, 1880.

J AM ES H. GERRY.

Witnesses:

CHARLES H. PELL,

OLIVER DRAKE. 

